This form comes from North Carolina, and has white flowers.
This form comes from Monmouth, New Jersey. One of the most hardy ones, when it comes to cold and wet
This form comes Washington DC.
This form grows in Meran, Switzerland.
This form is an old clone, with no or very few glochids.
This form is the typical type of humifusa, with no or very few glochids.
This form is named "Pink", after the new growth which appears pink.